CN103319307B - A kind of method preparing soda soap - Google Patents
A kind of method preparing soda soap Download PDFInfo
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- CN103319307B CN103319307B CN201310264831.5A CN201310264831A CN103319307B CN 103319307 B CN103319307 B CN 103319307B CN 201310264831 A CN201310264831 A CN 201310264831A CN 103319307 B CN103319307 B CN 103319307B
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Abstract
The present invention relates to a kind of method preparing soda soap, be in the organic solvent of grease 1 ~ 5 times in quality by lipid solubilization, in anhydrous conditions, this mixed solution is placed in the batch reactor with condensation reflux unit, is heated to 120 ~ 200 DEG C, make it seethe with excitement, slowly add the pulverulent solids sodium hydroxide that quality is 0.1 ~ 0.5 times of oil quality, vigorous stirring, carries out saponification reaction, obtains soda soap, glycerine, unsaponifiables and residual alkali; After reaction terminates, cooled at-10 ~ 20 DEG C by product, soda soap is separated out from solution, and suction filtration goes out organic solvent, and filter cake is dry 2h in the baking oven of 30 ~ 80 DEG C, and must be mixed with the soda soap product of a small amount of residual alkali, alkali content is lower than national standard; Glycerine and unsaponifiables are dissolved in organic solvent, and organic solvent utilizes through distillation Posterior circle.The inventive method is simple, efficient, environmental protection, and solid alkali consumption is few, is applicable to the preparation of the soda soap of various oil product, and products obtained therefrom productive rate is high, free caustic alkali content is low, and impurity is few, and look pure white, overcome complicated operation in traditional soda soap preparation process, product yield is low, the shortcoming that product impurity content is high.
Description
Technical field
The present invention relates to soda soap field, be specifically related to a kind of method preparing soda soap.
Background technology
Soda soap is indispensable starting material in daily life and Chemical Manufacture, and demand is wide, good in economic efficiency, so the optimization production of soda soap is a developable problem.
Traditional soda soap production technique is that the hydroxide aqueous solution of grease and metal carries out saponification reaction, through saltouing repeatedly, wash after filtration drying and obtain soda soap product.Although this method is comparatively widely used in the industrial production of soda soap, quantity of alkali consumption is large in process of production, and can not be fully used, reaction terminate rear generation a large amount of containing alkali waste water, cause environmental pollution; Production stage is loaded down with trivial details, needs to consume a large amount of sodium-chlor and distilled water; Product yield is low, foreign matter content high (being mainly unsaponifiables and glycerine) in product.
Along with growth in the living standard, the output of the various waste grease of catering trade also constantly increases, bring the harm to ecotope and food-safety problem thus, therefore, carrying out innoxious and recycling to waste grease is problem demanding prompt solution in current waste grease treatment research.Waste grease is utilized to prepare soda soap, for the further processing treatment of daily chemical products (as soap) or other Chemicals (as liquid hydrocarbon product), the problem of environmental pollution that waste grease brings can not only be alleviated, also for the shortage of the energy provides the solution route of economical rationality.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art existence, and provide a kind of method preparing soda soap, take grease as raw material, adopt wet method of fusion to prepare the method for soda soap, a kind of product yield is high, and impurity is few, coloury soapmaking technology, overcomes the shortcomings in traditional soap preparing process.
The object of the invention is to have come by following technical solution.This method preparing soda soap, the method comprises following step:
(1) by lipid solubilization in quality be grease 1 ~ 5 times organic solvent in, in anhydrous conditions, this mixed solution is placed in the batch reactor with condensation reflux unit, is heated to 120 ~ 200 DEG C, make it seethe with excitement, slowly add the pulverulent solids sodium hydroxide that quality is 0.1 ~ 0.5 times of oil quality, vigorous stirring, carries out saponification reaction, obtains soda soap, glycerine, unsaponifiables and residual alkali, wherein soda soap, glycerine and unsaponifiables are dissolved in organic solvent, and residual alkali is insoluble to organic solvent;
(2) after reaction terminates, by product, at-10 ~ 20 DEG C, (saponification resultant subcooling temperature controls at-10 ~ 20 DEG C, soda soap is separated out completely) under cooling, soda soap is separated out from solution, suction filtration goes out organic solvent, filter cake dry 2h in the baking oven of 30 ~ 80 DEG C (drying temperature of soda soap controls at 30 ~ 80 DEG C), must be mixed with the soda soap product of a small amount of residual alkali, alkali content is lower than national standard;
(3) glycerine and unsaponifiables are dissolved in organic solvent, and organic solvent utilizes through distillation Posterior circle.
One in described organic solvent employing dehydrated alcohol, 95% ethanol and anhydrous methanol or mixing solutions.
Described grease is one in soybean oil, rapeseed oil, Chinese vegetable tallow, lard, waste grease (as sewer oil) or compound lard.
Described saponification reaction temperature is preferably 150 ~ 180 DEG C.
Beneficial effect of the present invention is:
(1) adopt present method to prepare soda soap, device simple, operating process is simple, process efficient, environmental protection, and quantity of alkali consumption is low, is applicable to the preparation of various oil product soda soap;
(2) product yield adopting present method obtained is high, and alkali content is low, and impurity is few, the interpolation of organic solvent can dissolve by-product glycerin and the part unsaponifiables of saponification reaction generation, soap product quality is greatly improved, and solvent can utilize through Distillation recovery, and loss is low.Compared with traditional soap preparing process, without the need to saltouing and water-washing step, reduce productive expense and the energy consumption of product.
Embodiment
Below by embodiment, the present invention is further elaborated, and help is understood the present invention by embodiment better, but the present invention is not limited only to following embodiment.
Example 1: the production of soybean oil soda soap
100g soybean oil is dissolved in 95% ethanol of 400g, the reactor filling solution is placed in the salt bath of 170 DEG C, rapid stirring, after solution boiling, slowly adds the sodium hydroxide powder of 21.5g, continue reaction until sodium hydroxide all dissolves, soybean oil complete reaction.By solution left standstill subcooling, adularescent fluffy solid is slowly separated out, when solution temperature is down to 5 DEG C, no longer include solid to separate out, suction filtration, namely filter cake obtains soda soap product in dry 2-3 hour in 60 DEG C of baking ovens, filtrate is the ethanolic soln of glycerine and unsaponifiables, and ethanol can be recycled after distillation.Product soap quality is 109.4g, and productive rate is 90%.Adopt free caustic alkali content in QB/T2623.1-2003 standard test soda soap to be 0.176%, meet in GB8112-87 regulation being less than or equal to 0.3%.
Example 2: the production of rapeseed oil soda soap
100g rapeseed oil is dissolved in the dehydrated alcohol of 350g, the reactor filling solution is placed in the salt bath of 160 DEG C, rapid stirring, after solution boiling, slowly adds the sodium hydroxide powder of 23.5g, continue reaction until sodium hydroxide all dissolves, soybean oil complete reaction.By solution left standstill subcooling, adularescent fluffy solid is slowly separated out, when solution temperature is down to 0 DEG C, no longer include solid to separate out, suction filtration, namely filter cake obtains product soap in dry 2-3 hour in 60 DEG C of baking ovens, filtrate is the ethanolic soln of glycerine and unsaponifiables, and ethanol can be recycled after distillation.Product soap quality is 89.5g, and productive rate is 72.5%.Adopt free caustic alkali content in QB/T2623.1-2003 standard test soda soap to be 0.131%, meet in GB8112-87 regulation being less than or equal to 0.3%.
Example 3: the production of Chinese vegetable tallow soda soap
100g Chinese vegetable tallow is dissolved in the anhydrous methanol of 500g, the reactor filling solution is placed in the salt bath of 180 DEG C, rapid stirring, after solution boiling, slowly adds the sodium hydroxide powder of 23g, continue reaction until sodium hydroxide all dissolves, Chinese vegetable tallow complete reaction.By solution left standstill subcooling, adularescent fluffy solid is slowly separated out, when solution temperature is down to 0 DEG C, no longer include solid to separate out, suction filtration, namely filter cake obtains product soap in dry 2-3 hour in 60 DEG C of baking ovens, filtrate is the methanol solution of glycerine and unsaponifiables, and methyl alcohol can be recycled after distillation.Product soap quality is 93.5g, and productive rate is 76%.Adopt free caustic alkali content in QB/T2623.1-2003 standard test soda soap to be 0.148%, meet in GB8112-87 regulation being less than or equal to 0.3%.
Example 4: the production of sewer oil soda soap
100g sewer oil is dissolved in the anhydrous methanol of 450g, the reactor filling solution is placed in the salt bath of 170 DEG C, vigorous stirring, after solution boiling, slowly adds the sodium hydroxide powder of 25g, continue reaction until sodium hydroxide all dissolves, sewer oil complete reaction.By solution left standstill subcooling, adularescent fluffy solid is slowly separated out, when solution temperature is down to-5 DEG C, no longer include solid to separate out, suction filtration, namely filter cake obtains product soap in dry 2-3 hour in 60 DEG C of baking ovens, filtrate is the methanol solution of glycerine and unsaponifiables, and methyl alcohol can be recycled after distillation.Product soap quality is 78.8g, and productive rate is 63%.Adopt free caustic alkali content in QB/T2623.1-2003 standard test soda soap to be 0.152%, meet in GB8112-87 regulation being less than or equal to 0.3%.
Example 5: the production of lard soda soap
100g lard is dissolved in 400g anhydrous methanol, the reactor filling solution is placed in the salt bath of 160 DEG C, vigorous stirring, after solution boiling, slowly add the sodium hydroxide powder of 26.5g, continue reaction until sodium hydroxide no longer dissolves, lard complete reaction.By solution left standstill subcooling, adularescent fluffy solid is slowly separated out, when solution temperature is reduced to-5 DEG C, no longer include solid to separate out, suction filtration, namely filter cake obtains product soap in dry 2-3 hour in 60 DEG C of baking ovens, filtrate is the methanol solution of glycerine and unsaponifiables, and methyl alcohol can be recycled after distillation.Product soap quality is 114.6g, and productive rate is 90.6%.Adopt free caustic alkali content in QB/T2623.1-2003 standard test soda soap to be 0.091%, meet in GB8112-87 regulation being less than or equal to 0.3%.
Finally it should be noted that, except the present embodiment, the present invention can also have other embodiment and distortion, and what more than enumerate is only specific embodiments of the invention.All distortion that all those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (4)
1. prepare a method for soda soap, it is characterized in that: the method comprises following step:
(1) by lipid solubilization in quality be grease 1 ~ 5 times organic solvent in, in anhydrous conditions, this mixed solution is placed in the batch reactor with condensation reflux unit, is heated to 120 ~ 200 DEG C, make it seethe with excitement, slowly add the pulverulent solids sodium hydroxide that quality is 0.1 ~ 0.5 times of oil quality, vigorous stirring, carries out saponification reaction, obtains soda soap, glycerine, unsaponifiables and residual alkali, wherein soda soap, glycerine and unsaponifiables are dissolved in organic solvent, and residual alkali is insoluble to organic solvent;
(2), after reaction terminates, cooled at-10 ~ 20 DEG C by product, soda soap is separated out from solution, and suction filtration goes out organic solvent, and filter cake is dry 2h in the baking oven of 30 ~ 80 DEG C, and must be mixed with the soda soap product of a small amount of residual alkali, alkali content is lower than national standard;
(3) glycerine and unsaponifiables are dissolved in organic solvent, and organic solvent utilizes through distillation Posterior circle.
2. the method preparing soda soap according to claim 1, is characterized in that: described organic solvent adopts dehydrated alcohol.
3. the method preparing soda soap according to claim 1, is characterized in that: described grease is one in soybean oil, rapeseed oil, Chinese vegetable tallow, lard, waste grease or compound lard.
4. the method preparing soda soap according to claim 1, is characterized in that: described saponification reaction temperature is 150 ~ 180 DEG C.
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| CN201310264831.5A CN103319307B (en) | 2013-06-27 | 2013-06-27 | A kind of method preparing soda soap |
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| CN201310264831.5A CN103319307B (en) | 2013-06-27 | 2013-06-27 | A kind of method preparing soda soap |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104818153B (en) * | 2015-04-10 | 2017-09-29 | 阚立东 | A kind of method that utilization gutter oil manufactures soap powder |
| CN108043862A (en) * | 2017-12-08 | 2018-05-18 | 阚立东 | A kind of supervision on the spot of waste biomass grease and treatment process |
| CN109651079A (en) * | 2018-12-29 | 2019-04-19 | 佛山市云米电器科技有限公司 | Kitchen grease equipment is decomposed in a kind of saponification and kitchen grease method is decomposed in saponification |
| CN111233625A (en) * | 2020-03-26 | 2020-06-05 | 安徽顺鑫盛源生物食品有限公司 | Glycerol precipitation method in preparation of collagen peptide milk powder |
| CN113264825A (en) * | 2021-06-22 | 2021-08-17 | 徐州市宽利得科技贸易有限公司 | New process for producing sodium fatty acid by saponification of grease |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216318A (en) * | 1997-11-03 | 1999-05-12 | 薛国志 | Low-temperature high-alkali fast soap preparing process |
| CN1408832A (en) * | 2001-09-27 | 2003-04-09 | 中国石油化工股份有限公司 | Process for preparing wool fat aklaline earth metal soap |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216318A (en) * | 1997-11-03 | 1999-05-12 | 薛国志 | Low-temperature high-alkali fast soap preparing process |
| CN1408832A (en) * | 2001-09-27 | 2003-04-09 | 中国石油化工股份有限公司 | Process for preparing wool fat aklaline earth metal soap |
Non-Patent Citations (1)
| Title |
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| 沙棘籽油皂化工艺的研究;王思寒等;《食品工业科技》;20091231;第30卷(第6期);第212-214页 * |
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Effective date of registration: 20191225 Address after: No. 2388, xinqun Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province Patentee after: PINGHU SHENGJIA ELECTRONICS Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20191225 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui six districts (School of Chemical Engineering) Patentee before: Zhejiang University of Technology |
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Effective date of registration: 20210128 Address after: 445000 No.46, group 2, quannongting village, Yesanguan Town, Badong County, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province Patentee after: Deng Aimei Address before: No.2388, xinqun Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee before: PINGHU SHENGJIA ELECTRONICS Co.,Ltd. |